160 
Kidgway on (t new Alaskan Sandpiper. 
Total length, about 10 to 12J inches, extent 17£ to 20|; wing, 5.30- 
6.00 (5.73) ; culmen, 2.00-3.00; tarsus, 1.25-1.75 (1.53); middle toe, 
.90-1.10 (1.00). 
Yar. griseus. 
Wing, 5.25 - 5.90 (5.65) ; culmen, 2.00 - 2.55 (2.30) ; tarsus, 1.20-1.55 
(1.35) T middle toe, 0.90-1.05 (0.95).* Adult in summer: Abdomen 
whitish ; breast and sides speckled with dusky. 
Yar. scolopaceus. 
Wing, 5.40-6.00 (5.74); culmen, 2.10-3.00 (2.72) ; tarsus, 1.35-1.75 
(1.58) ; middle toe, 0.95 - 1.15 (1.01)4 Adult in summer : Abdomen uni- 
form cinnamon, without markings ; breast speckled (usually scantily), and 
sides barred with dusky. BuU- N.O.O. 5, Jnly, 1880, p. /$'7' / C 
ON A NEW ALASKAN SANDPIPER. 
BY ROBERT RIDGWAY. 
The various collectors of the National Museum in Alaska hc^ve 
sent from that country numerous specimens of a Sandpiper which 
in\ts winter plumage greatly resembles Arquatella mrfritima 
(Briinn,), but is very differently colored in its sunrp?fer dress. 
After mucji search among the older authors I have bpbn unable to 
find a namb .for it, and therefore, since it ’appears ' to be new to 
science, take pleasure in dedicating it to the wel^tnown author of 
an excellent “ Monograph of the North Amerigto Tringeee,” | also 
the original describer of a kindred Alaskan/ species, the A. ptilo- 
cnemis of the PrybilovSjslands. Following is a description of the 
. \ f 
new species : — 
Arquatella couesi, Ridc/iOi — The Aleutian Sandpiper. 
Sp. Ch. — Similar to A. maritime (Briinn.), but averaging slightly 
smaller, and the plumage appreciably different at all ages and seasons. 
Adult, breeding dress: Above fuliginous-slat'©, the feathers of the pileum 
broadly edged, those of the dorsal region (including the scapulars) widely 
bordered with rusty ochraceous, or bright cinnamon, (a few of the scapulars 
and interscapulars tipped with white in some specimens,) the central area 
of each feather nearly black, or much darker than the Wings and rump ; 
lesser wing-coverts slightly, and middle coverts broadly, bordered terminally 
* Extremes, and average of 18 fully adult specimens, 
t Extremes and average of 40 fully adult specimens, 
i Proe." Pliilad. Acad., 1861, pp. 170-205. 
" 
